FORM11-K ☒ANNUAL REPORT PURSUANT TO SECTION15(d) OF THE SECURITIESEXCHANGE ACT OF 1934For the Year Ended December 31, 2025OR☐TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THESECURITIES EXCHANGE ACT OF 1934For the Transition Period from_______________________to_______________________ Commission File No. 1-32525 A.Full title of the plan and the address of the plan, if different from that of the issuer named below: AMERIPRISE FINANCIAL 401(k)PLAN B.Name of issuer of the securities held pursuant to the plan and the address of its principal executiveoffice: AMERIPRISE FINANCIAL,INC.360 Ameriprise Financial CenterMinneapolis, MN 55474 Ameriprise Financial 401(k)PlanFinancial Statements and Supplemental Schedules Ameriprise Financial 401(k) PlanForm 11-K INDEX ReportofIndependentRegistered Public Accounting Firm1 Statements of Net Assets Available for Benefits as ofDecember 31, 2025 and 2024 Supplemental Schedules Schedule H, Line 4a — Schedule of Delinquent Participant Contributions as of and for the year endedDecember 31, 202511Schedule H, Line 4i — Schedule of Assets (Held at End of Year) as ofDecember 31, 202512 Report of Independent Registered Public Accounting Firm Tothe Administrator and Plan Participants of Ameriprise Financial 401(k) Plan Opinion on the Financial Statements We have audited the accompanying statements of net assets available for benefits of Ameriprise Financial 401(k) Plan (the “Plan”) asof December31, 2025 and 2024 and the related statement of changes in net assets available for benefits for the years then ended,including the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present Basis for Opinion These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on the Plan’sfinancial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting OversightBoard (United States) (PCAOB) and are required to be independent with respect to the Plan in accordance with the U.S. federal We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require thatwe plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement,whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due toerror or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidenceregarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used Supplemental Information The supplemental Schedule H, Line 4i - Schedule of Assets (Held at End of Year) as of December31, 2025 and Schedule H, Line 4a -Schedule of Delinquent Participant Contributions as of and for the year ended December 31, 2025 have been subjected to auditprocedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental schedules are theresponsibility of the Plan’s management. Our audit procedures included determining whether the supplemental schedules reconcile tothe financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the /s/ PricewaterhouseCoopers LLPMinneapolis, MinnesotaJune24, 2026 1.Description of the Plan General The Ameriprise Financial 401(k)Plan (the “Plan”), which became effective October1, 2005, is a defined contribution plan. Under theterms of the Plan, certain regular full-time and part-time employees of Ameriprise Financial,Inc. and its participating subsidiaries (the“Company”) can make contributions to the Plan and are eligible to receive Company contributions beginning with the pay period in The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”). The followingis not a comprehensive description of the Plan, and therefore, does not include all situations and limitations covered by the Plan.Participants should refer to the Plan document for more complete information. Recordkeeping and Trustee of Plan Assets Alight Solutions is the Plan’s recordkeeper, including the self-directed brokerage account. Principal Bank is the Plan’s trustee.Beginning on March 2, 2026, the Plan’s trustee transitioned from Principal Bank to The Northern Trust Company. The Plan isadministered by the Ameriprise Financial Employee Benefits Administration Committee (“EBAC”). The Ameriprise Financial 401(k)Investment Committee (“KIC”) selects and monitors the investment options offered to participants under the Plan and oversees matters ContributionsElective Contributions Each pay period, eligible participants may make pretax and/or Roth 401(k)contributions (up to 80% of elig